Hergé/Jo and Zette. Complete collection of 30 reels of still film "Le rayon mystère". Editions "Les beaux films" circa 1950. Original packaging. Very rare. TBE+ Appearing in the 1920s, fixed films took over from magic lantern projections, which had a number of drawbacks: weight and bulk of the medium, fragility, poor projection quality... Aimed primarily at teaching, and more broadly at transmitting knowledge, fixed films appeared as early as 1923, but did not become widespread until the 1950s. In the early 1950s, the French Ministry of Education began subsidizing schools that wanted to equip themselves with projectors, kick-starting a veritable golden age for the sector.

Composed of several subsidiaries, the Drouot Group is a major player in the art market. Hôtel Drouot, located in the heart of Paris, has been the world's largest public auction center since 1852. 15 salerooms are available to more than 70 auction houses. The emulation generated by an annual offer of 230,000 artworks from 21 major specialities - from Antiquity to street art - attracts some 3,000 visitors every day. The Group's digital platform, Drouot.com, offers digital sales - Live auctions (live broadcasting and participation in auctions), Online-only auctions (dematerialised auctions) and Buy Now sales (sales of lots at fixed prices). Nearly 2 million items are offered annually by 600 auction houses. Auction news is reported every week in La Gazette Drouot, the leading weekly magazine for the art market and culture published by Auctionspress.